Sash lock for windows



Sept. 8, 1925.

H. Wa HEERMANS SASH LOCK FOR WINDOWS Filed June 8. 1925 Ham/ Patented Sept. 8, 1925.

UNITED STATES HARRY W. HEERMANS, OF KENOSHA, WISCONSIN.

SASH LOOK FOR WINDOWS.

Application filed June a, 1925. Serial No. 35,553.

To all whom it may concern."

Be it known that I, HARRY W. HEERMANS, a citizen of the United States and a resident of Kenosha, county of Kenosha, and State of Wisconsin, have invented certain new and useful Improvements in Sash Looks for IVindows, of which the following is a specification.

This invention relates to improvements in sash locks for windows and it consists in the matters hereinafter described and more particularly pointed out in the appended claims.

The primary object of the invention is to provide a simple and eflicient device adapted to be attached to associated window sash whereby they may be securely locked in a fully closed position or in any one of a number of part way open positions for ventilation, the parts thereof being so arranged as to foil any attempt tomanipulate them from outside the window even though one of the sash is in a part way open position.

A further object of the invention is to provide a device of the kind which may be made and sold for a substantially low price and which may be readily applied to the sash by inexperienced persons.

These objects of the invention as well as others, together with the many advantages thereof will more fully appear as I proceed with my specification.

In the drawings Fig. 1 is a view in elevation of ortions of a window frameand associatec sashes with the parts forming my improved lock in position thereon. 1

Fig. 2 is a vertical section through the same as taken on the line 22 of Fig. 1.

Fig. 3 is a horizontal-sectional view as taken on the line 33 of Fig. 1.

Figs. 4, 5, 6 and 7 are detail perspective views of parts embodied in one form'of my improved sash lock.

Referring now in detailto that embodiment of the invention illustrated in the. accompanying drawings 1 indicates one of the side members of a window frame having the usual grooves 2-2 therein and in which the outermarginal portions of the stiles 3 and 4%, respectively of the top and bottom sash 3 and 4 have sliding guiding bearing in the manner well known. Said sash each include the usual meeting rails 23* and 4 and sash panes 3 and 4 as shown.

My improved construction includes a locking boltcasing 5 (see Fig. 5) which is secured to the top surface of the meeting rail of the bottom sash near the stile thereof. Said casing is in the form of a block like hollow body 6 which extends transversely of said meeting rail and has side flanges 77 by means of which it is attached to said rail as by the screws as shown. In each side flange near the rear end of the block like body is a recess 8.

In the body of the casing is slidably mounted a locking bolt 9 (see Fig. 7). The front end of said bolt is rectangular in cross section and has sliding hearing within the casing body and the rear end is in the form of a cylindrical extension 10 which has sliding bearing in the rear end of said casing body. A helical coil expansion spring 1O surrounds said extension in a manner normally urgingsaid bolt forwardly or outwardly of the block like body into its fully extended position. The extreme forward end of said bolt has a'lateral extension 11 and to the rear of said extension is a laterally opening recess or notch 12. In the front end of that side wall of the casing body associated with the extension 11 of the bolt is provided a recess 13 into which the said extension may enter when the bolt is in its fully retracted position.

Associated with said casing body not only I for manipulating the locking bolt but also for looking it in either its fully extended or retracted position is a cap or cover member 14 (see- Fig. 6). Thiscap or cover fits upon the block like body 6 and is intended to be moved longitudinally thereof and includes a top wall 14*, side walls 14 and a rear end wall 14 the side walls having depending lugs 1 1 adapted to be engaged in the recesses 8 of the bolt casing 5. In the top wall of the cover is provided a hole 14L through which a headed pin or-screw 15 loosely extends and passes through a longitudinal slot 6 in the top wall of the casing body and is fixed to the rectangular front end part of the locking bolt 9. Then the locking bolt is in its normally extended po sition, the cover so engages the casing body as to entirely enclose the same. To retract the bolt, the rear end of the cover is lifted upwardly, tilting about its forward end to withdraw the studs 14 from the recesses 8, there being sufficient play provided between the top wall of said cover and the headed end of the pin or screw 15 to permit this movement; After the cover. has been. thus tilted it is withdrawn rearwardly and through the pin or screw 15 a like movement.

ends of its lugs le will engage...or.-hook.

uponthe rear end edges of the flanges 7 of the casing block thus locking the bolt=in its fully retracted position.

ssociated with the locking bolt is a look;

ing plate 16--'(see Fi g. 4). This plate is vertically: elongated and it standsedgewise to the plane 'of movement of the locking As" shown herein saidplate is provided with a bent-over bottom end 17; which bolt.

is screwed to the top surface of the meeting rail 3* of the top sash and the top end of said plate has secured to it in any suitable manner, an l..-shaped extension, one leg 18 of which is fixed to the stile of the top sash and the other leg 19 of which projects beyond one edgeof the plate 16. In said. edge of said plate is provided a plurality.

of longitudinally spaced recesses 20,21, 22 and 23, respectively, the recess 20 being the bottom recess and being, deeper than the I other recessesf21, 22 and .28 which arethe intermediate and toprecesses respectively.

In applying the parts of'my improved lock toa window, the locking. bolt casing positioned with its median plane in the plane of that edge of the locking plate 16 containing the notches .20, 21, 22 and 23; before mentioned. Whenboth 'sashesare in their .fully' closedposition, the locking bolt9 is located when in its'normally extendedv position will project through said notch sothat the recess.

12 thereof is positioned forwardly: of the plane of said locking plate as best shown in fulllines in Fig. 3. Itis apparentthat with thelocking bolt ,inthis, position, both sashes are securely lockedand the lugs 1430f cap or cover 14- are arranged in the recesses 8 of the casing block, thus holdingthe locking;

bolt in this position. Now assume that it is desired to, lock the .WlllClOW sashes in a slightly open position. The cover. 1 1* is grasped and tilted upwardly into the dotted.

lineposition shown in Fig. 2, thus removing the 1ugs 14 from the,rec esses.8. cover is thus released and may now be drawn rearwardly until'the. recess 12. in the bolt is in thefp'laneof the locking plate; 16 as shown in dotted lines in Fig. 3 so one sash is capable of vertical movement with 'respect to the other. When the sash has been thus moved tofbring the desired notch into the planeofthe locking bolt, the cover is then moved forwardly and then downwardly to again enter the lugs 14 into the recesses 8. This operation places that portion The of the; bolt to the rear of tlie notch 12- within the desired notch .(21, 22, 01 23) in the locking...plate and thus locks the two together.. With the-parts in this position the window sash is locked in a partway, open position and as will be apparent, the cover locks the bolt against manipulation from the outside as byflmeans of bent wires or like devices.

Assume that it is desired to fully open one sash with respect to the other. The locking bolt;is'first actuated to bring the recess 12 into the plane of the locking plate and the windows must then be -fully closed to 1 bring the bolt into the plane ofthe notch 20;

because any of the others are too shallow or 7 not deep enough to permit the passage ofthe bolt' extension 11 therethroughu The cover is then tilted upwardly and then drawn; rearwardly against the action of the spring 10" so that the bolt-extension 11 'passesthrough said notch20 andthe cover is then swung downwardly so that the forward ends-of the cover lugs 14 -willengage'th'e rear end of the side flanges 77 of the casing and thus hold the bolt-retracted against;

the normal action of its associated spring. hen the bolt is in this position the .eXtension 11 will enter. the recess 13 in the forward end of the associated side wall ofthe casing body so that the front end of-said bolt and the front. endofthe casing body are flush with each other. The extension 19 on the locking 1 plate overhangs the notched edge of said; plate so that when the notch 12 of the bolt is. located in the plane, of the I p locking plate, it will prevent thefull' openin the horizontal plane of the deeper notch-20g ofthelocking plateand said locking bolt ing of either sash as is'apparent.

My improved sash lock has many advantagesj It consists of but a few parts which may be readily made at substantially a low cost .and may be easily ,assembledand applied to a window. The slidable cover asso; ciated ,withthe locking bolt locks the bolt in its fully extended or retracted. position and this withoutthe possibility ofqmanipu lation fronr the outsideiby unauthorized persons.

'l/Vhile in describing my invention, I have referred to certain details .of construction, as well as arrangement of parts thereofQI do not wish to be limited thereto except, as may. be pointed out in theappended claims.

I claim .as my invention: 7 r

1. A 'sash lockfor windows embodying thereina locking plate secured to one sash,

a casing on the other sash,a spring pressed 2. A sash lock for windows embodying therein a locking plate secured to one sash, a casing on the other sash, a spring pressed locking bolt in said casing adapted to engage said locking plate, a cover member slidable on said casing and operatively connected to said bolt for actuating the same, and lugs on said cover adapted to engage fixed parts of said casing for locking the bolt in either its fully extended or retracted position.

3. A sash lock for windows embodying therein, a locking plate secured to one sash, a casing including a body secured to the other sash, a spring pressed locking bolt in said casing body adapted to engage said locking plate, a cover member slidable on the casing body and having a top wall operatively engaged with the locking bolt and having side Walls with lugs thereon, said casing having recesses at one point to receive said lugs to hold the locking bolt in its extended position, said lugs upon a rearward movement of the cover being adapted to engage the rear edge of the casing to lock the bolt in its retracted position.

4. A sash lock for windows embodying therein a locking plate secured to one sash, a casing on the other sash, a spring pressed locking bolt in said casing adapted to engage said locking plate, a cover member slid able on said casing, means operatively connecting said cover and bolt, and coacting engaging means on said cover and casing for locking said bolt in either its extended or retracted position, said means connecting said cover and bolt permitting a tilting of the cover on said casing to disengage said coacting means on said cover and casing.

5. A sash lock for windows embodying therein a vertically disposed locking plate secured to one sash and having a plurality of longitudinally spaced notches in one edge thereof, with one of said notches deeper than the others, a casing fixed to the other sash, a spring pressed locking bolt in said casing and having a lateral extension on its forward end and a laterally opening notch to the rear thereof, and means for manipulating said bolt, said bolt extension being capable of passing through said deeper notch only and said bolt being capable of being manipulated to bring its notch into the plane of said plate so that that portion of the locking bolt to the rear of said notch is capable of passing through any of said other notches.

In testimony whereof, I have hereunto set my hand, this 4th day of June, 1925.

HARRY WV. HEERMANS. 

